SDP/SI Cart(800) 819-8900
    Products   Shafts & Shaft Accessories

Precision Ground Shafting and Shaft Accessories

Precision Ground Shafting and Shaft Accessories

SDP/SI machines high-quality shafting, available off-the-shelf or made to your exact needs. SDP/SI specializes in Swiss machining, milling, tapping and drilling in aluminum, stainless steel, steel alloys, and titanium.

Custom precision shafting can be made to meet your specifications:

  • 1/32“ to 1-1/2“ diameters
  • Tolerance: +/-.00001“
  • Straightness: Up to .0003“/Inch
  • Length: Up to 12 feet

The following modifications can be applied to shafts available through our catalog or e-store:
  • Journal ends
  • Through holes
  • Threaded ends
  • Chamfered ends
  • Flats

If your need is assembly – we do that to. Custom mechanical assemblies can be fabricated using our precision shafting with gears, pulleys, couplings and bearings from inventory or modified for your application. Call and to learn more about the options available at SDP/SI.

A wide range of Shaft Accessories are offered by SDP/SI. Precision and commercial quality shaft/hub clamps are available in many different styles and sizes for fastening gears, pulleys and dials to a shaft. Shaftloc® fasteners are easy to reposition, easy to assemble, applicable to small shaft diameters and are cost effective. Other shaft accessories offered are shaft reducers and extenders, telescoping miniature ball splines and bore reducers, inch to inch reduction and inch to metric reduction.


Commercial Bore Reducers

Commercial Bore Reducers


Inch-to-inch and inch-to-metric bore adapters are offered in aluminum and brass in a wide variety of sizes. Bore adapters with thicker walls may have a slot extending into opposite wall for additional flexibility. O.D. and I.D. tolerances are maintained before slitting.


Commercial Hex Hole Sleeves

Commercial Hex Hole Sleeves



Commercial Hexagon Stock

Commercial Hex Hole Sleeves



Precision Locking Hub Bushings

Precision Locking Hub Bushings


Locking hub bushings are designed to fit components with limited hub O.D. and eliminate the need for keys or splines.


Precision Pipe Shafts

Precision Pipe Shafts



Commercial Pontentiometer Shaft Locks

Commercial Pontentiometer Shaft Locks



Precision Pressure Locking Hub Connectors

Precision Pressure Locking Hub Connectors


Pressure Locking Hub Connectors allow for accurate, fast and frequent mounting/dismantling with only one set screw. No space is used along the shaft for mounting tools. When the pressure screw is tightened to the recommended tightening torque, the double-walled sleeve expands uniformly against shaft and hub and creates a rigid joint. Dismantling is done by loosening the screw which returns the connector to its original dimensions.


Commercial and Precision Shaft Collars

Commercial & Precision Shaft Collars



Precision Clamp Type Collars

Precision Clamp Type Shaft Collars



Precision Fairloc® Shaft Collars

Precision Fairloc® Shaft Collars


Precision Fairloc® Shaft Collars with integral bearing shim spacer provides more holding strength than set screw collars. Fairloc® Shaft Collars are offered in brass, black oxide finish and stainless steel for 1/8 up to 3/4 size shafts.


Precision Fastlock Shaft Collars

Precision Fastlock Shaft Collars


No tools are required when using Fastlock Shaft Collars. Slide the stainless steel collar to the correct position onto the shaft. It is now locked in place. To release, hold body of collar and pull release ring. This allows the collar to be easily removed.


Commercial and Precision Set Screw Collars

Commercial & Precision Set Screw Type Shaft Collars



Precision Shafts & Drill Rods

Precision Shafts & Drill Rods



Commercial Fairloc® Shaft Reducers and Extenders

Commercial Shaft Reducers & Extenders


Stainless steel precision shaft extensions, inch and metric sized Fairloc® shaft reducers and extenders and stainless steel shaft reducers and extenders are offered in a wide variety of sizes. Other bore sizes not listed are available on special order.


Precision Shaft Supports

Precision Shaft Supports



Commercial Square Hole Sleeves

Commercial Square Hole Sleeves



Commercial Square Stock

Commercial Square Stock



Precision Stroke Adjust and Rubber Bumpers

Precision Stroke Adjust Collars & Rubber Bumpers



Precision Taper Bushings

Precision Taper Bushings



Precision Telescoping Ball Splines

Precision Telescoping Ball Splines


Stainless steel telescoping miniature ball splines are compact in design and feature zero backlash, low inertia and accommodates 1/4 axial motion. These spines may be mated to the S57PY5-… and S57PY4-… series of universal joints to make telescoping universal joints.